Yeah, I mean there's no way to leave a server running where people can play their own characters and such drop in and drop out IE a persistent world.

You can definitely play your module in multi player.

My D:OS Mods:
Dunamis - A 15 hour Adventure Mod for D:OS EE

A Necromancer's Crusade - 10 hour adventure mod for D:OS EE

4 Character Creation (EE)